Available as an assembled Module and as a DIY project.
This Module is currently available.
Passive LP with vactrol CV control
Knob overlaps panel - great for very subtle control
Epiphone 57CH and Hotch
TC Electronic TC Electronic The Prophet
TC Electronic TC Electronic Skysurfer
Electro-Harmonix Electro Harmonix Pitch
Vs Audio VS Audio Blackbird, Recent
Dunlop Dunlop 535Q Wah, Recent